Bag-making machine.



H. G. BENDER.

BAG MAKING MACHINE.

APPLICATION FILED JUNE 2!, I916- lfi lfiwn Patentedfiept. 25, 1917.

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ATTORNEYS H. G. BENDER.

BAG MAKING MACHINE.

APPLICATION FILED JUNE 21. I916.

Patented Sept. 2*, 1917.

ISHEETS-SHEET 2.

BY 7M WW A TTOR/l/EKS H. G. BENDER.

BAG MAKING MACHINE.

APPLICATION FILED JUNE 21,1916.

Patented Sept. 25, 1917'.

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IV VE N TOR QL-TJ YQEE.

ATTORNEYS H. G. BENDER.

BAG MAKING MACHINE.

APPLICATION FILED JUNE 21,1916.

Patented Sept. 25, 1917..

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0. i IO III I I I I l I I 1 I I I I I I I I I l By WM H.4G. BENDER.

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WITNESS Ill/VENTOR @046. mm TQfiEA/DEE.

A TTOR/VEVS H. G. BENDER.

BAG MAKING MACHINE.

APPLICATION FILED JUNE 21. I916.

)E E N 55 R R 2 MD m t r M N WU VE d3 G. a m H an sat.

HORACE G. BENDER, F AKRON, OHIO, ASSIGNOR 0F ONE-HALF T0 LLEWELLYN H.

BENDER, OF A. z.

1:50.31, OHIO.

BAG-MAKING .macnrnn.

Specification of Letters Eatent.

Application filed June 21, 1916. Serial No. 105,659.

To all whom it may concern:

Be it known that I, HoRAoE'G. BENDER, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Bag-Making Machines, of which the following is a specification:

The object of the invention is to provide a machine. which is adapted to handle a bolt or roll of goods suitable for making salt bags and the like and to convert the goods into bags of standard or other sizes, Within limits, the goods or stock in its progress through the machine being first converted into a tube lengthwise and then cut to lengths and sewed transversely and discharged from the machine a complete bag with nothing left to do but to reverse the bag right side out, all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a front elevation of the machine, and Fig. 2 is a longitudinal sectional elevation thereof.

Fig. 3 is a rear elevation of the-'machine and reversed as to Fig. 1. Fig. 4 is a plan View, and Fig. 5 is an end elevation looking ilin from the right of Fig. 1 or the left of Fig. 6 is a cross section on line 66, Fi 4:, and Fig. 7 is a cross section on line 7 Fig. 4.

Fig. 8 is a more or less diagrammatic plan view of the machine, and Fig. 9 is a sectional elevation of Fig. 8, the said two views serving to illustrate the complete operation and the detail mechanism for which is shown in the other views. Fig. 10, sheet 4, shows a mutilated gear in the table operating mechanism shown in Fig. 7. Fig. 11 is a sectional view showing the main shaft and certain gear connections and other parts operatively connected therewith.

In a general way the machine and its operation can be understood from Figs. 8 and 9. In these views the goods or stock g to be converted approaches from the roll. over the flat V-shaped folder f. under pull or tension from the two rolls 1' and is doubled or folded lengthwise as it passes over the point ofthe said folder into and throughthe said rolls. Next-to said rolls 1s the stitching mechanism we and needle 02.

andwhich sews the oods lengthwise along its otherwise open e ge. Thence the goods passes beneath the counter weight w to the rollers r is compensated or taken up by said counterweight. The pause in drum d and and roller r is momentary as the goods pauses to be severed into uniform and predetermmed lengths b the vertically reciprocat ng blade or kni e 71;.

Having passed the said knife or cutter,

which may be of any suitable kind, the bag blank 6 is delivered upon table at, which is a member reciprocating transversely of the machine and ada ed to deliver the blank to the series of blank feeding disks of rollers 2 and 3 on shafts 2' and 3 respectively,and which rollers have rubber or like surfaces and engage the bag between them and carry the same along while its bottom end is being stitched by the needle a A fixed table It underlies and supplements the table It at its rear and the bottom rolls 3. work through slots in said table, and the said rolls or disks and the needle n are timed to work harmoniously together. This concludes the manufacture and the bag is discharged from the machine.

Now, having this somewhat general view of the operation of the machine as disclosed step by step in Figs. 8 and 9 the more detailed mechanism will be readily understood. Thus, the V-shaped folder for the goods is shown in Fig. 5 as having a flat surface with the point down and set at an inclination vertically and is also slidable horizontally back and forth in suitable guideways in respect to roll R by means of a screw rod 4 having a hand lever 4' and which adaptes the folderto bring goods of difierent widths in line at its edge with the stitching needle, which is stationary as to location. The roll R is supported on standards 5 laterally adjustable by right and left screws 6 and hand levers 6, adjustment be ing according to the width of the roll and each standard moving in corresponding degree:1 relatively to the center line of the 00 s. g From the said down feed and folding rolls 1' the goods passes, first, to the needle 9?. and is stretched longitudinally as described and carried behind the confining rod or roller 8 and beneath the counterweight w before passing to and over drum d, and which intermediate parts rather serve to take up slack and keep the goods stretched while the said .drum and its roller 7" pauses as the travel is stopped to permit shearing or cutting by knife la. This momentary detention of said drum and roller is automatic, and the mechanism comprises a brake shoe 9 for said drum mounted on a pivoted lever 10 having spring pressure 11 behind its outer end and engagement of which is controlled through a suspended pivoted arm 12 which is adapted to be engaged at its free end by a cam like projection 13 on a cam shaft 14. The spring 11 is wound on a stem 15 pivoted on arm 12 and extendingthrough the lever 10, so that the shoe 9"isi 'pressed into engagement by said projection and released by the spring when the arm 12 is free to swing inward.

The said shaft 14 carries a grooved cam 16, Fig. 2, which operates the cutter is at fixed intervals through a frame comprising the rods 17 having a cross-head 18 with a roller 19 working in said cam, and rotation of drum d is timed to occur while said eutter is idle or raised. This timing ef' the drum is effected through the mediumof a vibrating arm 20, Fig. 1, having a segmental rack 21 at its top engaging a pinion 22 on shaft 23 carrying said drum and which arm is operated, Fig. 1, by or from a gear 24 having a coupling rod 25 eccentrically aflixed thereto and is engaged with the said arm by an adjustable box bearing 26 therein. The pinion 22 on shaft 23 has a friction clutch or ratchet mechanism 27 in or upon the back thereof and adapted to engage the shaft therewith to effect rotation of the drum on the corresponding swing of arm 20, but also adapted to make an idle play on said shaft during the opposite swing or stroke of said arm and at which time the drum d is at rest. The said gear 24 is mounted on a short shaft 28 having bearing in the machine frame and said gear. is adapted to be substituted by a larger or smaller wheel according to the length of stroke desired for arm 20 and which is according to the length of bag to be made. Shaft 28 has a gear 29. meshing with pinion 30 on the power shaft S to drive the same, see Fig. 11.

The needle n, which sews the stock lengthwise, is operated by a line of mechanism through interchangeable gear 24 by pinion 31 mounted on or in a hanging arm a, Figs. 1 and 5, and controlled as to locked position in respect to gear 24 by a hand screw it engaged through an ear in the main frame. The gear 9 engages a pinion g on shaft 32 through which and the line of gears 33, 34, 35, and pinion 36 actuation is imparted to the sewing mechanism for needle 71., see Fig. 5.

Now, assuming that the goods, stock or material has been folded upon itself lengthwise and sewed along its otherwise open edge by needle n and delivered at right angles to its original line of travel through feed drum d and roller r to the severing knife or cutter is, the bag blank is delivered from said knife upon the reciprocating table If and carried forward thereby over the sta tionary table t and presented to needle n for transverse or end stitching. Here the stitching is regulated according to the width of the bag since the bottom is to be crossstitched, and table 25 is actuated or reciprobox 43, Figs. 2 and 7, which carries a pinion 4 44 adapted to mesh with a fixed rack 45, Fig. 7, over which it runs and at its top with rack 46 on the base 47 which carries table t, see Fig. 7.

The direct effect and value of this organization of parts is to give a quick reciprocating movement to table t which delivers the bag to the feed rollers 2 and 3 while the drum is at rest. Thus, assuming that said table is retired to receive a bag blank and arm 41 is on a rotary forward sweep from the dead center shown in Fig. 7 and the gears are in mesh, the pinion 44 will be drawn and rotated forwardly by engagement with fixed rack.4 5 and this will carry the table t forward also on its side guides 48 at the desired speed and until the bag blank is delivered into the bite of said rolls 2 and 3. Then the table t will be returned to starting position before gear 38 has exhausted its engagement. The said gear is supposed to have enough teeth to complete the reciprocation of table t, which carries ;a transversely disposed gage and feed plate 50 for the bag blank. This plate is adjustable on its supporting arms 51 accordingto the width of the bag or blank. The pinion carrymg box 43 is adapted to slide over and L along the sides of rack 45.

Shaft 3' carrying the active rolls 3 is posi tively rotated by the bevel gears 52, 53, 54. and 55, successively, in mesh as seen at the left in Fig. 2. Gear 55 is carried by shaft 56, which is driven from the shaft 32 by bevel gears 57 and 58, Fig. 2.

The needle n which sews the bottom of the bag is operated by any suitable sewing.

machine mechanism generally. indicated by m and which is actuated by a line of gears extending back to shaft 56, Fig. 2 and marked 80, 81 and 82. Thus both the stitching or sewing mechanisms are operated together primarily from shaft 32 and their stitching is controlled and made uniform by the interchangeable gear 24, which also controls the intermittent feed of the stock to the cutter. Thus the operation of the feed to the cutter is synchronized with both stitching mechanisms.

The primary rolls 1" between which the sheet is double folded and drawn down are driven by intermeshing gears 64, Fig. 4, and a gear on the shaft of one of said rolls has driving connection from a vertical shaft 66 having gear 67 at its top in mesh with gear 65. Shaft 66 is driven by gear 68,Fig. 1, meshing with a gear 69 on a driven shaft 70 and which is geared back to shaft 32. As to this line of drive mechanism and other kindred lines it may be suggested that they are not arbitrary nor exclusive, and that the same operating effect can be obtained by equivalent mechanisms and combinations of parts, so that applicant is not to be understood as being restricted to the exact means shown and which the rules require to be somewhat minutely described.

The first direct and important step or operation of the machine consists in the conversion of the plain flat strip or piece of fabric into a practically endless or continuous tube, and the after mechanism has to do with the conversion of the tube into bags of any desirable length. The original stock also may have any width accommodated to the machine, and the operation is 7 continuous and harmonious throughout as described.

Salt bags have been indicated as the object of the machine, but, obviously, neither the use of the bags nor the kind or quality of the fabric is involved in the question of novelty. However, it is to be noted that the machine has to deal with a lightlimp fabric for salt and sugar and like bags, and which is quite different from a material which has stiffness and can be handled by a different feed and carrying mechanism.

The box bearing 26 in arm 20 for rotating feed roll (1 is adjustable in. said arm by means of a screw to refine the throw of the arm after other adjustments have been made. structurally the machine has a main frame F and a bed'B fixed thereon and all the other parts are mounted on said bed and frame.

What I claim is:

1. A machine as described having a support for a fabric roll comprising standards adjustable in respect'to each other, a set of tension rolls and a device over which the fabric passes to said rolls provided with means to adjust the same toward and from said roll support.

2. A bag making machine as described comprising means to make a tube from woven fabric, a cutter to sever the tube into bag lengths, and means to feed the tube to the cutter comprising a drum and a'roller over the same, ashaft and a cam thereon operatively connected with said cutter and brake mechanism for said drum actuated from said shaft.

3. A bag making machine having means to form a tube from a strip of fabricand a cutter to sever the tube into lengths, feed mechanism for the fabric to said cutter comprising a revolving drum, an oscillating arm operatively engaged with said drum and means to vary the degree of oscillation and thereby vary the feed of stock to said cutter. 4. A machine for sewing bags, compris- 1ng sewmg mechanism, a device to fold the goods to be sewed, a support for a roll of goods, and means to move said folding device relatively nearer to or farther from said sewing mechanism. q

5. machine for sewing bags, comprising a sewing device and a device to fold the goods, one of said devices being movably mounted for adjustment to permit sewing operations on goods of varying width.

6. A machine for sewing bags, comprising adjustable supports for a roll of goods, a folding device adjustably related to said supports, and a sewing device for the goods mounted in line with said folding device.

7. A machine to make bags from woven fabric, comprising'means to carry a roll of the fabric, means to fold the fabric lengthwise and means to stitch the same along one edge, means to sever the tube thus produced into bag blanks, a reciprocating table to receive the blanks and deliver the same at one side of the foregoing mechanism and means to stitch the ends ,of said blanks.

8. "A machine for making finished bags from a length of woven fabric comprising means to fold the fabric lengthwise upon itself and to stitch the folded fabric at its otherwise 0 en edge, a cutter to sever the blanks and rolls to feed the stock to said cutter, means to momentarily suspend the rotation of said rolls and means to take up slack in the stock while suspension occurs, in combination with stitching mechanism for the end of the blank and a laterally reciprocating table to deliver'the blanks thereto.

10. A machine as described having supporting standards for a roll of fabric, a set of tension rolls adapted to exert a down- .ward pull on the fabric and a device between said standards and said tension adapted to contribute to the folding of the fabric lengthwise upon itself, the said device provided with means to adjust the same toward and from the said roll su porting standards according to the width 0 the fabric. I

11. The machine described having a support for a roll of fabric, a set of tension rolls for the fabric and a substantially V-shaped device having a flat face and its point midway over the bite of said rolls and adapted to guide the fabric thereto, the said rolls and said device being at right angles to each other and hand controlled means to adjust said device back and forth in respect to said roll su port.

12. machine as described, comprising a support for a roll of fabric, a set of tension rolls at right angles thereto, a plate of substantially V-sha e over which the fabric passes to said re s, means to adjust the position-of said plate in respect to the support for the fabric roll and a fixed. stitching mechanism for the fabric next succeeding said tension rolls, whereby the fabric is adjusted to said stitching mechanism.

13. A bag making machine as described comprisin means to form a tube from a piece of abric, a cutter to sever the tube into lengths, feed mechanism for the fabric to the cutter comprisin a pair of rolls, a

brake for one of said no ls, means to actuate said brake at intervalstimed to the action of said cutter and means to take up slack in the fabric while the brake is engaged.

14. A bag making machine as described comprising mechanism adapted to form a tube of woven fabric and a cutter to sever the tube into ba lengths, in combination with a pair of r01 ers to feed the tube to the cutter and means to rotate said rollers intermittently and to vary the length of tube fed to said cutter according to the length of bag desired.

15. .A machine as describedhaving stitching mechanism for the bottom of the bag and means to feed the bag blank thereto, comprising a reci rocating table adapted to carry said blank orward to be stitched and means to operate said table adapted to effect a forward and a return movement thereof in a continuous operation and to rest the table for a predetermined interval after such movement to receive another blank.

In testimony whereof I aflix my signature in presence of two witnesses:

HORACE G. BENDER. Witnesses:

Gno. E. Kmcxnn,. F. O. HARROLD. 

